6505646 has 16 divisors (see below), whose sum is σ = 11390976. Its totient is φ = 2728536.

The previous prime is 6505643. The next prime is 6505649. The reversal of 6505646 is 6465056.

It is an interprime number because it is at equal distance from previous prime (6505643) and next prime (6505649).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4286 + ... + 5601.

It is an arithmetic number, because the mean of its divisors is an integer number (711936).

Almost surely, 2^6505646 is an apocalyptic number.

6505646 is a deficient number, since it is larger than the sum of its proper divisors (4885330).

6505646 is a wasteful number, since it uses less digits than its factorization.

6505646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9943.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 6505646 is about 2550.6167881514. The cubic root of 6505646 is about 186.6795774800.

The spelling of 6505646 in words is "six million, five hundred five thousand, six hundred forty-six".